OpenSSL::X509::Name#add_entry

static
VALUE ossl_x509name_add_entry(int argc, VALUE *argv, VALUE self)
{
    X509_NAME *name;
    VALUE oid, value, type, opts, kwargs[2];
    static ID kwargs_ids[2];
    const char *oid_name;
    int loc = -1, set = 0;

    if (!kwargs_ids[0]) {
        kwargs_ids[0] = rb_intern_const("loc");
        kwargs_ids[1] = rb_intern_const("set");
    }
    rb_scan_args(argc, argv, "21:", &oid, &value, &type, &opts);
    rb_get_kwargs(opts, kwargs_ids, 0, 2, kwargs);
    oid_name = StringValueCStr(oid);
    StringValue(value);
    if(NIL_P(type)) type = rb_aref(OBJECT_TYPE_TEMPLATE, oid);
    if (kwargs[0] != Qundef)
        loc = NUM2INT(kwargs[0]);
    if (kwargs[1] != Qundef)
        set = NUM2INT(kwargs[1]);
    GetX509Name(self, name);
    if (!X509_NAME_add_entry_by_txt(name, oid_name, NUM2INT(type),
                                    (unsigned char *)RSTRING_PTR(value),
                                    RSTRING_LENINT(value), loc, set))
        ossl_raise(eX509NameError, "X509_NAME_add_entry_by_txt");
    return self;
}